| /*! |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You under the Apache License, Version 2.0 |
| * (the "License"); you may not use this file except in compliance with |
| * the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| */ |
| |
| import Context from '../../trace/context/Context'; |
| import SpanContext from '../../trace/context/SpanContext'; |
| import { executionAsyncId, createHook } from 'async_hooks'; |
| |
| class ContextManager { |
| contextKeyedByAsyncId: { [asyncId: number]: Context } = {}; |
| |
| constructor() { |
| createHook({ |
| destroy: (asyncId: number) => { |
| delete this.contextKeyedByAsyncId[asyncId]; |
| }, |
| }).enable(); |
| } |
| |
| get current(): Context { |
| const thisAsyncId = executionAsyncId(); |
| |
| this.contextKeyedByAsyncId[thisAsyncId] = this.contextKeyedByAsyncId[thisAsyncId] || new SpanContext(thisAsyncId); |
| |
| return this.contextKeyedByAsyncId[thisAsyncId]; |
| } |
| } |
| |
| export default new ContextManager(); |